Relationship between the expression of the HAX1 splice variants I and II and established prognostic factors in breast cancer. Median
of relative overexpression was calculated for each group (lower and upper quartile
values in parenthesis). Statistical significance was denoted in the groups were the
number of cases was sufficient to perform the Wilcoxon matched-pairs test (size, nodal
status, ER, PR, HER2 status) and a P-value of < 0.05 was observed.